硬度
21 25 30 52 HRC, Soft 21HRC
Material
201/304/316 Stainless Steel
siz
4mm steel ball stainless steel ball
Special Types
Stainless Steel Ball
Material standa
GB AISI JIS DIN BS UNI SIS NF C
Tolerance
±0.002~0.02mm refers to grade
Experience
26 years steel ball manufactu
Product shape
perfect round
Finishing
polishing or plating of nickel
Product
4mm Bead Cleaning Stainles
Grade
302 304 316 420 430 440 stainle